High-performance voltammetric sensor for dichlorophenol based on β-cyclodextrin functionalized boron-doped graphene...

Area of Science:

• Electrochemistry
• Materials Science
• Environmental Science

Background:

• 2,2-methylenebis(4-chlorophenol) (dichlorophenol, Dcp) is a priority pollutant with significant public health risks, necessitating sensitive detection methods.
• Heteroatom-doped carbon nanomaterials and β-cyclodextrin (β-CD) show promise as electrocatalysts and signal amplifiers in electrochemical sensing.

Purpose of the Study:

• To design and fabricate a high-performance electrochemical sensing platform for sensitive Dcp determination.
• To investigate the synergistic effects of three-dimensional (3D) boron-doped graphene aerogels (BGAs) and β-CD for enhanced Dcp detection.

Main Methods:

• Fabrication of a composite material using 3D boron-doped graphene aerogels (BGAs) and β-cyclodextrin (β-CD).
• Electrochemical characterization and performance evaluation of the BGAs/β-CD composite as a sensor for Dcp.
• Optimization of experimental conditions to determine Dcp concentration.

Main Results:

• The BGAs/β-CD composite exhibited excellent electrochemical properties due to the high surface area, conductivity of graphene aerogels, and boron doping.
• The sensor achieved sensitive detection of Dcp with a linear relationship between oxidation currents and concentration in the range of 1.0 nM to 21 μM.
• A low detection limit of 0.33 nM (S/N = 3) was obtained for Dcp.

Conclusions:

• The BGAs/β-CD composite serves as a highly effective electrochemical sensing platform for the sensitive determination of Dcp.
• This study demonstrates the potential of 3D boron-doped graphene aerogels combined with β-CD for developing advanced environmental sensors.